FR1135193A - Method and device for making halftone clichés - Google Patents

Method and device for making halftone clichés

Info

Publication number
FR1135193A
FR1135193A FR1135193DA FR1135193A FR 1135193 A FR1135193 A FR 1135193A FR 1135193D A FR1135193D A FR 1135193DA FR 1135193 A FR1135193 A FR 1135193A
Authority
FR
France
Prior art keywords
clichés
making halftone
halftone
making
halftone clichés
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Rudolf Hell
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR1135193A publication Critical patent/FR1135193A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4092—Edge or detail enhancement

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
FR1135193D 1954-11-10 1955-11-10 Method and device for making halftone clichés Expired FR1135193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE332844X 1954-11-10

Publications (1)

Publication Number Publication Date
FR1135193A true FR1135193A (en) 1957-04-25

Family

ID=6205950

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1135193D Expired FR1135193A (en) 1954-11-10 1955-11-10 Method and device for making halftone clichés

Country Status (4)

Country Link
US (1) US2892887A (en)
CH (1) CH332844A (en)
FR (1) FR1135193A (en)
GB (1) GB819244A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039842B (en) * 1957-08-14 1958-09-25 Rudol Hell Dr Ing Process for the artificial increase of contrast on tone value cracks and contours in clichés to be produced by means of electronic cliché machines
US3149202A (en) * 1959-10-17 1964-09-15 Ibm Digitization of video signals
FR1250541A (en) * 1959-11-30 1961-01-13 Ancienne Maison Turquetil Device for automatic engraving
US3170032A (en) * 1961-06-22 1965-02-16 Dick Co Ab Facsimile-scanner with a.g.c. of output signal by multiplication of low and high definition signals
US3461229A (en) * 1965-08-17 1969-08-12 Jess Oppenheimer Electro-optical reproduction method
GB1204542A (en) * 1967-02-20 1970-09-09 Rca Corp Improved printing process
US3646262A (en) * 1968-03-25 1972-02-29 Printing Dev Inc Electronic reproduction of continuous image with controlled modification of image reproduction
US3580995A (en) * 1968-04-29 1971-05-25 Rca Corp Constant sized halftone dot image generator
US3694570A (en) * 1970-07-22 1972-09-26 Evgeny Pavlovich Kotov Automatic engraving machine
US3726994A (en) * 1970-10-02 1973-04-10 World Color Press Automatic routing system
US4054916A (en) * 1972-06-02 1977-10-18 Dr. -Ing. Rudolf Hell Gmbh Apparatus for improving sharpness when recording continuous-tone pictures
US4051536A (en) * 1975-03-14 1977-09-27 Xerox Corporation Electronic halftone imaging system
DE2805237C3 (en) * 1978-02-08 1984-09-06 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Arrangement to increase contrast
JPS55146451A (en) * 1979-05-02 1980-11-14 Dainippon Screen Mfg Co Ltd Sharpness emphasis method in image scanning recorder
ATE18815T1 (en) * 1982-07-03 1986-04-15 Hell Rudolf Dr Ing Gmbh METHOD AND ARRANGEMENT FOR CONTRAST ENHANCEMENT.
CH672212A5 (en) * 1983-06-03 1989-10-31 Gravure Inc
US5341224A (en) * 1992-04-17 1994-08-23 Xerox Corporation Image processing system and method for employing adaptive scanning of halftones to provide better printable images

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2021474A (en) * 1930-03-22 1935-11-19 Bartholomew Harry Guy Phototelegraphy
US2063614A (en) * 1931-12-14 1936-12-08 Mackinner Corp Method and apparatus for making printing plates
GB460721A (en) * 1935-08-07 1937-02-03 George William Walton Improvements in or relating to television and like systems
US2269590A (en) * 1939-08-02 1942-01-13 Hazeltine Corp Signal-translating system and method of operation
US2691696A (en) * 1950-10-27 1954-10-12 Eastman Kodak Co Electrooptical unsharp masking in color reproduction
DE930491C (en) * 1952-07-15 1955-07-18 Rudolf Dr-Ing Hell Process for the electromechanical production of letterpress forms based on line templates

Also Published As

Publication number Publication date
CH332844A (en) 1958-09-30
GB819244A (en) 1959-09-02
US2892887A (en) 1959-06-30

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